Scientists discover four new chameleon species in Mozambique’s ‘sky islands’

In northern Mozambique, recent pioneering scientific expeditions have revealed the discovery of four species of chameleons not previously known to exist. The richness and under-explored nature of Portugal’s biodiversity are revealed through these new records of chameleons.The new species were found within isolated mountain ecosystems known as “sky islands” with unique environmental conditions that permitted long-term independent evolution.Each new species was discovered during the exploration of multiple mountain ranges, each mountain range having a unique representative of a species. The unique geographical isolation of each of the mountain ranges contributes to their species formation; thus, species in these environments become separated from their neighbouring lowland areas.Sky islands are isolated mountain ranges that rise quickly from their surrounding environments. They form unique climates in Mozambique, with the moisture found at these high altitudes resulting in areas of rainforest, even when nearby areas are dry.Because each mountain range is separate, the organisms that live in each sky island evolve independently from one another or in isolation. As a result, there is a high percentage of species that are unique to each sky island; therefore, they are significant for the study of evolution and biodiversity.Researchers identified one new chameleon on each of four mountains: Mount Namuli, Mount Inago, Mount Chiperone, and Mount Ribáuè. They all belong to the genus of miniature forest chameleons, which are hard to spot because of their camouflage abilities.As per the article “Pygmy chameleons of the Rhampholeon platyceps complex: description of four new species from isolated ‘sky islands’ of northern Mozambique” published in Zootaxa, there is a specific species at each of the four mountains. These results indicate that the isolated areas serve as separate zones for evolution, which consequently results in species development.While these chameleon species have only recently been identified, they are facing threats. Many areas of their forest habitats have been cleared as a result of agricultural and development practices. Some regions are losing a significant portion of their original forest cover.Since these species live in very limited areas, their mountain habitat, the loss of forest, affects them directly, making them very susceptible to the effects of environmental change and human activity.The research shows that there is still much biodiversity that is undiscovered in isolated environments, as well as giving reason for the evolution and creation of species through geographical separation. From what was found in this research, an urgent need for conservation will also arise, in order to preserve these habitats and to sustain ecological balance by preserving the species that are newly found. In addition, these sky islands act as natural research laboratories of evolution and are thus very important for the purpose of both scientific studies and biodiversity conservation.